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Finish commenting GetPagedMessageInputLine #15

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opened 2023-01-23 18:54:41 +01:00 by zotan · 0 comments
zotan commented 2023-01-23 18:54:41 +01:00
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Specifically

Lines 388 to 390 in f3372f3
var wraps = (absCursorPos - wrapOffsetPostI) / (bufferWidth - wrapOffsetPreI - wrapOffsetPostI); // black magic
var finalCursorPos = absCursorPos - bufferWidth + wrapOffsetPreI + wrapOffsetPostI * wraps; // respect the special case of the first page & add one post offset per wrap
finalCursorPos %= bufferWidth - wrapOffsetPreI; // make sure the final cursor position is within the acceptable range (between zero and bufWidth - wrapOffsetPreI)

(replace "black magic" with explanation of /why/ it works, verify that explanation of the other lines is correct)

Specifically https://git.ztn.sh/zotan/tgcli/src/commit/f3372f39e4271bd51de7c7521cc6b3c85402281e/tgcli/Util.cs#L388-L390 (replace "black magic" with explanation of /why/ it works, verify that explanation of the other lines is correct)
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Reference: zotan/tgcli#15
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